You Plough To A Greater Extent Than Graphs Of Calorie Intake Vs. Bmi
In the final post, a reader commented that the correlation would live on to a greater extent than convincing if I graphed calories vs. average BMI rather than the prevalence of obesity. It was a valid point, together with then I went searching for average BMI values from NHANES surveys. I dug upwards a CDC document that contains information from surveys betwixt 1960 together with 2002 (1). Because these information exclusively encompass v survey periods, nosotros exclusively larn v information points to analyze, every bit opposed to the 8 used inward the final post. The document contains BMI values for men together with women separately, together with then I averaged the ii to estimate average BMI inward the full general adult population. It's likewise worth noting that I purpose the estimate midpoint of the survey menses every bit the year.
First, a graph of average BMI over time. It went up:
Now, let's run into how good average BMI correlates with calorie intake:
The correlation betwixt calorie intake together with obesity prevalence was remarkable, but this correlation is only incredible. An R-squared value of 0.98 indicates that daily calorie intake together with average BMI are virtually perfectly correlated.
We tin farther deduce that each 100-calorie increase inward daily nutrient intake is associated with an 0.62-point increase inward average BMI with U.S.A. of America adults.
